The three most commonly used types of syringes are hypodermic, tuberculin, and:

A. IV
B. insulin
C. saline
D. butterfly

b
Rationale: Hypodermic, tuberculin, and insulin syringes are the three most common types. IV administration uses needles inserted by using short angles to the skin, directly into a vein, and taped down to the skin. This method allows longer term, continuous infusion of IV medications. There are no specific syringes referred to as "saline" syringes. The term butterfly re-fers to a clamp used in IV administration.